Sony AM-NX9, Service Manual

Page: 21 / 62

21
AM-NX9
• Adjustment Method of VREC_LOW (X2 speed)
(item number: 751)
1. Connect a digital voltmeter to the TP1620 (VREC) on the
MAIN board, and adjust
[VOL +]
key (voltage up) or
[VOL --]
key (voltage down) so that the voltage becomes 1.20 ± 0.02V.
2. Press the u
/ENTER
key to write the adjusted value.
Adjustment and Connection Location: MAIN board
(see page 22)
• Adjustment Method of VREC_MIDDLE (X4 speed)
(item number: 752)
1. Connect a digital voltmeter to the TP1620 (VREC) on the
MAIN board, and adjust
[VOL +]
key (voltage up) or
[VOL --]
key (voltage down) so that the voltage becomes 1.20
±
0.02V.
2. Press the
u
/ENTER key to write the adjusted value.
Adjustment and Connection Location: MAIN board
(see page 22)
Set LCD display
V R E C H
753
digital
voltmeter
TP1620 (VREC)
BATT – (GND)
MAIN board
Set LCD display
V R E C L
751
digital
voltmeter
TP1620 (VREC)
BATT – (GND)
MAIN board
Set LCD display
V R E C M
752
digital
voltmeter
TP1620 (VREC)
BATT – (GND)
MAIN board
• Adjustment Method of VREC_HIGH (HEAD MOTOR)
(item number: 753)
1. Connect a digital voltmeter to the TP1620 (VREC) on the
MAIN board, and adjust
[VOL +]
key (voltage up) or
[VOL --]
key (voltage down) so that the voltage becomes between 1.65V
and 1.75V.
2. Press the u /ENTER key to write the adjusted value.
Adjustment and Connection Location: MAIN board
(see page 22)